Citenco Motor

I have a Citenco Varicontrol motor that needs some refurbishment.

It's the type that was commonly used as a Laboratory Stirrer.

24:1 worm reduction on the output; and two concentric knobs on the back end, giving on/off and continuous speed control.

I have removed the bell-housing from the output end, but cannot access the other end, because the speed control knob is stubbornly fixed. It's held by two radial grubscrews ... but I suspect that these are very long. I have tried various penetrating fluids, to no avail. The knob is a couple of inches diameter, and the threads are presumably in the central boss.

Before I resort to destroying the knob, just to remove it ... Does anyone have one of these motors? A photo, or description, of the underside of the knob would be a great help. ...

If I know the topography, I may be able to inject some penetrating fluid into the right places.

Thanks

MichaelG.

Edited By Michael Gilligan on 21/11/2013 09:15:02

Hi there, Michael,

I have a motor that I think is of the type you mention.

However, I'm currently confined to barracks with a lurgi so I can't get to the workshop.

If you haven't heard from me in a week, send me a PM to jog my memory.

Best regards,

Swarf, Mostly!

Swarf ...

Many thanks for this.

I wish you a speedy recovery.

MichaelG.

Hi Michael

I have one of these motors ... and I have located it!!!!!

Can take photo's, if still needed.

Rgds

Bill

Thanks, Bill

Swarf, Mostly! has kindly put some pictures in an album ... but his is a slightly different model [probably earlier, and better made]

Mine is the "Blue Hammerite painted" one, Model KTQS II

The knob has a stick-on Aluminium label, but I suspect it looks much like Swarf's on the underside.

My guess is that the nice Brass insert was "improved" to a Steel one, to save a few Farthings.

... The screws are "impossibly tight", so probably rusted-in.

.

If yours is the same as Swarf's then there is no need for photos, but if it's the one like mine then a photo of the underside of the knob would be much appreciated.

.

MichaelG.

Hi Michael

This one is KQPS34 looks similar to Swarf's but badged for Griffin and George. Speed control knob is secured by a pair of grub screws, so all 'same-same' by the look of it.

Rgds

Bill

Hi Michael

This one is KQPS34 looks similar to Swarf's but badged for Griffin and George. Speed control knob is secured by a pair of grub screws, so all 'same-same' by the look of it.

Rgds

Bill

PS see your PMs

Thanks Bill,

I think mine will be bathing in PlusGas tomorrow.

MichaelG.